Debag message: Have no file

I have this error message for all Java projects on my Mac with NetBeans:

debug:
Have no file for /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jsfd.jar
Have no file for /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/laf.jar
Have no file for /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/sunrsasign.jar

after this message everything start work without any problem, but how to solve this question?

Java on my Mac automatically updates, so if I have last version of JDK why it has not these files?

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